A Swedish web-based service (www.escreen.se) offers self-assessment and  self-monitoring of alcohol and drug use via on-line screening with the Alcohol  Use Disorders Identification Test (AUDIT) and the Drug Use Disorders  Identification Test (DUDIT) as well as in-depth risk assessment using extended  versions of both tests (Alcohol-E and DUDIT-E). Users receive individualized  feedback concerning their alcohol and drug consumption and can follow their  alcohol and drug use over time in personal diagrams and by writing in an  electronic diary.
This study describes user characteristics, service utilization  patterns, and psychometric test properties for 2361 individuals who created a  valid account over 20 months starting in February 2007.
Problematic alcohol use  according to AUDIT criteria was indicated for 67.4%, while 46.0% met DUDIT  criteria for problematic drug use. Men and women accessed the service equally,  with a mean age of 23 years. Internal consistency reliability figures were 0.90  for 1846 first-time AUDIT users and 0.97 for 1211 first-time DUDIT users; among  213 second-time AUDIT users reliability was 0.93, and 0.96 for 97 second-time  DUDIT users.
Internet-based alcohol and drug monitoring could function as a self-help tool or as a complement to substance abuse treatment.
Request Reprint E-Mail: kristina.sinadinovic@ki.se
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